Bumps as you described are ok. It's new roots trying to poke out. Don't test your soil ph with with those janky home de-pot testers. They are inacurate. Test the soil ph by testing the water run-off. Also be more descriptive. Are your plants 6 week in veg or flower? If in veg turn your plant over and slip the pot off to check the roots. If there are a bunch your best bet is to transplant. Your description is to vague to tell. Transplanting is easy. Just get a bigger pot and when your plants soil is ready for water then transplant. If you water before the t-plant then that heavy wet soil can break apart causing torn roots. Got any pics? Droopage is caused by underwatering/overwatering, lockout, or rootbound.