Pregnant or Symptoms from stopping the pill?

? I recently started taking Loestrin birth control (cause i had irregular periods) on Wed May 27th...after my first pack of birth control pills(which i took for 3weeks) i stopped taking them but while i was on them my period was on for about a 11 days it started June 13 and ended June 23rd it went off 4 days before my last pill the night of my last pill(the brown one) which was Satuday June 20th i had unprotected sex and he ejaculated in me its been about two weeks since i been off the pills Friday July 3rd i had unprotected sex and he ejaculated in me again then i did the same thing sunday July 5th but he pulled out...so whats the possibility that i could i be pregnant? Also when would be the best time to test? Also Before i was on the pill i had irregular periods and i had unprotected sex and he ejaculated in me and i didnt get pregnant....i also havent been feeling good, keep feeling like i have to puke, ive been having head aches i know they say you start urinating alot when the baby gets big enough to press down on the bladder but i have been urinating alot ...my breast are a little tender when i touch around the sides and the nipples hurt a little when i touch them, ive been sleepy alot, also i keep havin pains on each side the lower part of my stomach....but idk i could have been feeling this way or it could be from coming off the pill but i havent been on them that long so i didnt know if they had time to get in my system? also if i would of continued taking my pills my period should have came on this week(brown pills) but it hasnt... i also wasnt very good at taking my pills the same time everyday...i know im not going to be sure until i test though