My take on the throwing up thing with Tara is more related to her losing her ability to be a surgeon. Surgeons generally have no issue with dead bodies and are very clinical about them. IMHO it mostly shows the effect on how the violence associated with SAMCRO affects someone from outside that outlaw culture. It also shows her level of commitment to Jax to continue to struggle to be part of that world which has such a strong & negative effect on her. Or she could be pregnant.
