So I'm a heavy set person and I'm a beginner. My girlfriend is also on the heavy side. I bought an 8 in dildo with Too Timid but have been unsuccessful at using it on her. I'm 5"1 and she's like 5"4. She was doggystyle on the bed and I was standing but she was too high and I could only put the tip in and it would slip out. Should I buy a bigger penis?