Pleaseee someone help. Me and my boyfriend only had sex twice this month and it was a very short time and he pulled out. My period is irregular but in febuary it came on the 17th then in march it came on the 18th but now its april and its the 22nd??? 

Ive only been having minor back pain, and i keep feeling like im going to get it and nothing but clear discharge. I took a test yesterday and it came out negative! Could i be pregnant or should i keep waiting for it to come?