Confused??

Difference between ovulation before period and cervix mucus as a sigh of early pregnancy?Could I be pregnant? Im scared, my boyfriend and I dry humped naked on the 15th of April. He just barely touched my entrance with his tip and it hurt? After that happened we used a condom but he never penetrated in me whatsoever. He came in my panties that night(before he put the condos on) but nowhere near my vagina opening more towards my pelvic area) and I wiped it away and I slept with my panties on that night? and I’ve been experiencing early pregnancy like symptoms and I can’t tell if it’s PMS, symptoms such as upper back pain but very little, peeing A LOT (not sure if it was because of the tea I was drinking bc it makes u pee a lot) stomach cramps (they stopped two days ago) I don’t feel nauseous or dizzy. I’ve been reading that you can ovulate if you’re pregnant but how? My period should be by the end of this week or early next week. I know stressing can set back my period but I’m diagnosed with an anxiety disorder and I can’t help but stress if I don’t get emotional support. Ive been doing research and I’m so confused with ovulation before your period and cervix mucus being an early sign of pregnancy?? I woke up today and only my boobs and stomach are hurting and I feel fine