Possible Virus?

I got notifications that i have a virus in certain apps. I had little buttons on the notifications saying, "Delete virus or cancel" so being the dumbass I am, I freaked out and clicked "Delete Virus" and I have been freaking out the past 10 days trying to make sure that I don't have a virus or malware. I took all personal information off of my phone and wrote it down. I deleted certain apps I don't use. I backed up my photos and other things. I only really want my photos. I was planning to factory reset but I'm scared to do such a thing. I noticed that my phone told me my battery would die in a few hours but only on 50% when I would have 10 hrs left normally but a few days later it was back to normal. I'm doing scans for my sercuity and privacy every hour. I don't want to download an antivirus app because some can't be trusted and I don't have the money for a good one. I really hope I don't have one. Any ideas?