Skipping periods

K

So I’m new to using birth control. I’m almost finished with my third pack. My doctor told me that because my period wasn’t very bad that it might take my periods away altogether. Last month my period was super weird, like it started when it was supposed to but I was more of a pink creamy discharge. I got scared thinking I was pregnant but I wasn’t. I haven’t had intercourse since before my last period because I got so freaked out but I have messed around a lot with my boyfriend so I know that it would be practically impossible for me to be pregnant right now. I’ve held off on sex because I wanted to see what this months period will do. My period is supposed to start today but hasn’t yet. So my question for you is if you do skip your periods how do you keep from stressing out or thinking your not pregnant every month?