Thank you for your consult at DoctorSpring.com.
There are no major interactions between Benadryl and the other medications you are taking. Yes, you can take Benadryl for a cold, as directed by the label.
Having said that the other medicines you are taking are serious drugs and should only be taken in consult with your local doctor, as they are heavy medications to be taken in combination. I assume that if you have been prescribed these medicines, your doctor and yourself have distinguished that the benefits of the medications outweigh the risks.
Take care and be well. Please ask follow up questions, if any.