My boyfriend and I recently tried to have sex, though all he could really fit was half the tip in. I'm in birth control pills, and I take them every night before bed, around the same time. But, I got my pills late (I usually take them on a Sunday after my period is over) but I didn't take them until Tuesday so I missed 2 days. Currently I'm sick, and I threw up yesterday morning because I gagged at some smell. I've been looking up pregnancy symptoms faithfully, and I do not have frequent urination, darkened nipples, tender breasts, back pain, or mood swings.. I feel nauseous but it's a combination with my cold also since I have muscle aches, headaches, and fatigue. He did not release inside of me- he didn't release at all but we're scared if I could get pregnant from pre-ejeculation.