Ladies please help! I need advice

Gemira
Hey ladies, 
 So ice been with my boyfriend for 6 years and we used to use condoms all the time. When I turned 18 I started to use birth control called minastrin 24. So we decided that we should start not using condoms 1 because I'm allergic to them and 2 it doesn't feel the same for either of us. So far I've been on the pill for about a year and no pregnancy scared so far BUT sometimes after sex  I have terrible stomach aches AND when I take the 4 brown pills my period dosent start until after I take all 4 brown pills. So ladies I need to know.....with your pill if you don't use condoms are these side effects normal (stomach pains and late periods) and has anyone ever gotten pregnant while on the pill AND he ALWAYS pulls out like I watch it come out. 
Thanks ladies ! 😘