Bleeding after Sex

So I just recently started having sex more often. I lost virginity last year but didn’t really have much sex after that. Now I’m having sex more or less than 3 times a month. I’ve been bleeding after sex. Like spotting that day and the day after. I googled it and idk if I should go to my OBGYN or not..? Idk what’s happening. Help anyone? ☹️