Baby having trouble sleeping

She doesn’t want to sleep if I’m not right next to her or she’s laying on me. I’ve tried leave things with my scent, staying with her until she’s in a deep sleep and rocking her until she’s fast asleep and all those only work for a bit them within minutes she up again. She’s 8months and just started to get her first tooth, could that be why? She’s became very clingy and wants to be held a lot, cries when I put her down etc. anyone else deal with this? How’d dis you manage?